DE20117798U1 - Xings - Google Patents

Description

Description

The invention relates to a composite anchor which serves to connect a concrete outer slab (facing shell) to a concrete inner slab (supporting shell) through an insulation layer. Such anchors and their arrangement are already known from the publications DE2760190 and DE2738098. In these publications, reinforced concrete outer slabs and reinforced concrete inner slabs are ... united with the help of rectangular anchors made of sheet metal or rectangular rod frames with lattice reinforcement ...". However, the "flat anchors" described there have a crucial disadvantage. They must protrude beyond the reinforcement present in the component in order to ensure the installation of the load-introducing round rods below the component reinforcement (see also Figure 4). Therefore, due to the required concrete cover of the flat anchor in the area of the concrete outer slab (facing shell), this must be made thicker than necessary.

The purpose of the composite anchor (1) according to the invention is to connect concrete outer panels with concrete inner panels through an insulation layer, but to enable the construction of thinner outer and inner panels and at the same time to save time and money. By achieving a thinner facing shell, the weight and thus also the costs for transport can be reduced considerably. The installation of the composite anchor (1) in the formwork should also be made easier.
The composite anchor (1) according to the invention solves this problem by means of the special embodiments as shown by way of example in Figures 1 to 3. Due to the hook-shaped bend (2) of the composite anchor end or both ends (see also Figure 3; 2 and ²¹ ), it is no longer necessary for there to be a considerably larger overhang in the reinforcement area of the respective concrete slab. The composite anchor (1) is installed by hanging it (6) in a reinforcement mat (7) already present in the component or individual reinforcement bars (8) subsequently inserted into the component. The possibility of the composite anchor (1) tipping over or falling over is prevented by appropriately inserted round steel longitudinal sections (3), e.g. reinforcement bars. The positional stability of the composite anchor (1) is thus guaranteed during the setting of the facing shell, as well as during the insertion of the insulation layer and the subsequent supporting shell. It is particularly advantageous that the anti-twisting and anti-tilting device in the form of round steel longitudinal sections (3) can be easily inserted. To do this, the hook-shaped (2;2') end of the composite anchor (1) is simply pressed together slightly, the round steel longitudinal sections (3) are guided through the respective opening (4) and then the hook-shaped (2;2') section of the composite anchor (1) is released. The existing return spring force (9) of the hook-shaped end (2;2"> of the composite anchor (1) fixes the round steel longitudinal sections (3) in their position. Therefore, no additional means are required to fix the composite anchor (1) in or on the reinforcement mat or individual reinforcement bars inserted into the component. Instead of the openings (4) in the inner area of the composite anchor (1), elongated holes (5) in the edge area of the composite anchor (1) are also conceivable, which accommodate the round steel longitudinal sections (3') for fixing. It goes without saying that the number and arrangement of the openings (4) or elongated holes (5) in the composite anchor (1) is so varied that the requirement to accommodate a wide variety of round steel diameters can be met. For this reason, a graphic representation has been dispensed with in the corresponding figures.

Furthermore, due to the dimensional design of the composite anchor, it is no longer necessary to cut out individual bars of a reinforcement mesh (7) that may be present in the component in order to install the composite anchor. This is because installation is always possible within a standard square of structural steel mesh (10). This solution not only saves installation materials, but also significantly reduces the working time required to position such a composite anchor in the corresponding concrete slab.

List of reference symbols
1.) Composite anchor
2.) Hook-shaped bends
3.) Round steel longitudinal section
4.) Openings in the interior
5.) Long holes in the outdoor area
6.) Bending area of the composite anchor (1) for holding round steel bars 7.) Reinforcement mat
8.) Reinforcing bars
9.) Return spring force
10.) Steel mesh square

Claims (5)

1. Composite anchor (1) for connecting the concrete outer slab and the concrete inner slab, between which there is an insulation layer,
characterized ,
that at one or both ends there are hook-shaped bends (2; 2') at an angle of 90° to 180°, which can be hooked into a reinforcement existing in the component or additionally inserted. 2. Composite anchor according to claim 1, characterized in that there are openings (4; 6) in both the hook-shaped bends and in the straight connecting part for receiving round steel sections (3). 3. Composite anchor (1) according to claim 1 or 2, characterized in that the hook-shaped end bend (2; 2') is designed to be resilient, so that after assembly of the round steel sections (3) and spring-back bending (9) of the end bends, the round steel sections (3) are fixed in the openings (4; 5). 4. Composite anchor according to one or more of the preceding claims, characterized in that the opening (4) for receiving the fixing round steel sections can also be designed as a lateral elongated hole (5). 5. Composite anchor according to one or more of the preceding claims, characterized in that the material of the composite anchor is corrosion-resistant material, for example stainless steel or plastics as well as other materials not susceptible to corrosion.